Dating ba ru
However, Slavic settlements in southern Ukraine started to appear relatively early during the Cuman rule, with the earliest ones, like Oleshky, dating back to the 11th century.
Early "Proto-Cossack" groups are generally reported to have come into existence within the present-day Ukraine in the mid-13th century as the influence of Cumans grew weaker, though some have ascribed their origins to as early as the tenth century.
Afterwards, the Treaty of Pereyaslav (1654) brought most of the Ukrainian Cossack state under Russian rule. Together they began a systematic conquest and colonisation of lands in order to secure the borders on the Volga, the whole of Siberia (see Yermak Timofeyevich) and the Yaik (Ural) and the Terek Rivers.Cossack service was considered the most rigorous one.Because of their military tradition, Cossack forces played an important role in Russia's wars of the 18th–20th centuries, such as the Great Northern War, the Seven Years' War, the Crimean War, Napoleonic Wars, the Caucasus War, numerous Russo-Persian Wars, numerous Russo-Turkish Wars and the First World War.The Zaporozhian Cossacks lived on the Pontic-Caspian steppe below the Dnieper Rapids (Ukrainian: za porohamy), also known as the Wild Fields.
They became a well-known group whose numbers increased greatly between the 15th and 17th centuries.It is unlikely it could have happened before the 13th century, when the Mongols broke the power of the Cumans, who had assimilated the previous population on that territory.It is known that new settlers inherited a lifestyle that persisted there long before, such as those of the Turkic Cumans and the Circassian Kassaks.There, Cossacks may have served as self-defense formations, organized to defend against raids conducted by neighbors.